The Valley of Fire State Park visitor center is 50 miles from downtown Las Vegas via I-15 and NV 169, or 68 miles via Lake Mead Blvd and NV 167 (Northshore Rd). The northern approach through Logandale and Overton, also along NV 169, is 25 miles, starting at I-15 exit 93.
Area Map - Lake Mead NRA